Hakbter jsefg



l, 1924 B. E. FERNow, JR

POWER TRANSMISSION MECHANISM Filed yDeo.

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Patented Jan. l, 1924i UNITED STATES r 1,419,034 PATENT OFFICE.

BERNHARD E. FERNOW. JR. OF MILWAUKEE, WISCONSIN, ASSIGNOR T0 THE CUTLEB- HAMMER MFG. C0., 0F MLRUAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

') NER-TRANSMISSION MECHANISM.

Application filed December 18, IBI. Serial NoA 268,928.

To 0N whom if 71mg/ echen-a.'

Be it known that L Brummen E. lfi-znszow, Jr., a citizen of the United States. residing at Milwaukee, in the county of Milwaukee and State of `Wisconsin. have invented new and useful Improvements in Power-Transmission ltfechanisms, of which the following is a, full, clear, concise, and exact description, reference being had to the mrrompanying drawing, forming a part of this specification.

This invention relates to power transmission mechanisms.

In certain classes of industrial installation? of which rubber rolling mills may be taken as exemplary, it has heretofore been found necessary to employ both a releasahle, clutch and a flexible coupling in the power connection, and the present invention has among its objects to provide for the` afore- Said and analogous installations a simplified and more compact transmission mechanism emhodyin the combined operative characteristics o? said elements.

A further object of the invention is that` of providing a transmission mechanism of the character aforestated adapted to he readily installed between permanently mounted driving and driven devices and readily removable therefrom.

A still further object is that of providing a transmission mechanism of the character stated wherein the various parts are co-ordinated for support thereof :y permanently mounted driving and driven incinta-rs.

Other objects and advantages will hereinafter appear.

ln the accompanying drawing. wherein is illustrated an embodiment of the invention,

Figure 1 is a Side elevational View, partly in section, thereof. while,

Fig. 2 is an end elevational View of the. same.

Referring to the drawing, the same illustrates a pair of hubs and 2 having flanges Il and 4 respectively and being' adapted for fixed mounting! respectively opor. a driving4 shaft .fi-and a driven shaft il willi their flanges opposed to each other :ind arranged flush with the ends of' said sha fl s. The latter are substantially aligned and separted axiallyr to provide a space between said flanges for ready insertion or removal in assembled relation of an electron .ignetic clutch mechanism indicated generally at 7 having its field member 8 centrallyY extended in an axial direction to provide a supporting bearing4 l) for an additional flanged hub member 10, the lattericnustituting a support for the clutch aimatur Il and furthermore having its flange l2 arranged adjacent the correspondingr flange 4 of the hub member 2 forflcxible and releusable connection therewit 1.

More particularly, the h'eld member 8 is provided with a shallow counterbored p0rtion 13 to receive the end of the flan e 3 for support of the former. said field mem r and said flange being provided with a series of registering openings to receive bolts 14 for rigidly securing;r said members together, said field member being provided witn the usual friction ring 15 and with a channel to receive an electromagnetic winding 16, the latter beingr supplied with current in the usual manner from a suitable source through slip rings indicated at 17.1'

rhe axially extended central said field member is provided with an annular shoulder 18 ,against which a shoulder 1l) of the hub 10 is adapted to abut, suitable anti-friction packing being inter osed. The flanged end of said hub 10 is urthermore connterborcd as indicated at 20 to provide an mlditionai shoulder adapted to lie flush with the adjacent end of said central section of the clutch iieid member` a disk 21 being,r secured to the hitler by means of lag bolts for securing said hub against. axial movement. relative to said field member, while permitting relative rotation thereof, the counterbored portion of said hub being preferably of sullicient depth to receive the heads of the lag bolts within the axial projection thereof.

The. clutch armature 11 is preferably se` cured in the usual manner to an annular springF disk 22, the latter being centrally fixed. b v lag bolts or other means, to the side oF the hub member 10 ad'acent the clutch field member whereby sniff armature and spring disk are supported for independent of tbe field member and are held against axial movement relative thereto excepting; the spring biased movement nl the armature 1l common to clutches of this character.

The flexible langfes of the hub portion of rotation connection between the members 2 and 10, which is ot' known construction, comprises essen,A

tlally a plurality of flexible units to be soiv cured in registering recesses of said flanges, euch unit including a group of lenf springs arranged flutwise :ind havingl caps 23 nud 24 fitted over their ends. Each cap is furthermore seem-ed in place by n pin pnssing therethrough and tlirou rh the portions of the leaf springs encloset thereby` wherias the pin openings in one of said caps are extended axially to provide slots :for permittingla limited relitti-ve axial movement between .said cap and its enclosed springs. The :iforedescribed spring units are inserteble from either side within the registering openings in the tiangcsl and i2, the respective cups bein,\ r provided with channels to receive resilient wire rings 25 and Qt: which are sprung into the aforesaid channels after assemblingr of the spring units within the flanges, euch ring being adapted to rest against the outer axial face of its adjacent flange for retaining the caps engaged thereby against axial movement.

The aforedescribecl lost motion conuection between the units :ind their respective caps in conjunction with thr. flexibility of each unit permits the benrinr to adjust it- Self to moderate det-frees of nusalignment or eccentricity of the riving und driven shafts whether such conditions be permanent, temporary or recurrent.. y

From the foregoing it is obvious that upon removal of the eprin7 rings 25 and 26, the flexible units may be removed axially and thaty thereafter upon removal of lag bolts 14, the assembled clutch' and coupling elements may be shifted slightly to the right of the drawing for freeing the flange 3 from the counter bored portion 13 and that thereafter said elements may be removed as a unit from between the driving and driven supports whereas for reassembly only similar steps in opposite sequence nre required. Also, the nforedescribed combination wherein the constitutent elements of the unit nre arranged to supportV one nnother obviates thc necessity of the connecting;r shaft. and bearings customarilil enrployed.

A brake drum 2i' outer periphery of the hub or is mounted upon the flange lV ol' the drivcu couplingi element 2 hein;r secured thereto by bolts pin-singthroogl; registering lugs of seid drum :ind clementk :thereby said drum ma \v also be ccadiljty removed Without displacement'of the driviu; r :md driven members. after removal of the transmission mechanism.

Said drum is encircled bv n brake bond 2H. the latter beingr anchored to a fixed portion of the machine frame by means of n bracket 29 Secured to said band' und a bolt 30 for rigidly securing;r seid bracket to the frame. One end of Asaid band is furthermore provided with it loop 31 to surround a fixed bolt 32 While the other end of said band is attached by means of en adjustable 'connection 33 to an oscilintnble lever 34 having one endA fulcrnmed at 35 :1nd the other end provided with ndjustzible weights 36 normali tending to tighten the band about the drum. For releasing the brake, the lever 34 is protided with n releasing Solenoid, indicated gcncrully it 3T. tite plunger of Said solenoid being connected bj.' n link 38 to said lever nt :i pointy intermediate the fulcrum 3:3 and the tights 36. The operntion of the brake is believed to be obvious from thel'oregoing description, it being understood that the clutch und solenoid windings muy be interconnected to provide lorY release of the brake upon en ,L'agcmcnt of the clutch find vice versn.

lfhat 1 clnim ns new and desire to secure by Letters' lntent is:

l. The combination with sube-tnntially aligned flanged driving :and driven members arranged with their flanges adjacent one another und relutivcl).Y spaced. of .f1 power transmission mechanism iiisertable between said flanges :ind femm-little therefrom without displacement thereof, said mechanism includingaxially aligned niembers to be secured to sziid flanges respec tively 'for support .solely thereby and being"r adapted to provide a flexible and a releasable power connection therebetween.

Q. The combination with n pair offlnngecl hubs to bc mounted respectively upon substantially aligned of transmission means adapted to be insertcd as a unit between said hubs to provide a power connection therefor, said mechanism including n magnetic clutch field member to be secured to one of said hubs and having nn axially projecting portion, un additional fanged member revolubl,Y supported upon suid projecting portion in register with the other of seid hubs for flexible connection therewith and n clutch arnmture carried by said flanged member for cti-operation with said field member.

Il. The combination with substantially axially aligned flanged driving anddriven members arranged with their flanges tidincent one another and relntirely spaced, of n power transmission mechanism insertuble between said flanges uand removable therefrom without displacement thereof. .said ineclntiiioin including;r :t member to be rigidly `secured to one of nxizill)v aligned :1nd relatively rotatable member supported thereby for flexible connection with the other of said flanges and intermediate mechanism providing a releasablc power connection between said latter members.

4. The combination with n ptir of substantizilll)y axially aligned flanged driving and driven members arranged with their flanges adjacent. one another and relntirely driving and dri ren shafts;

said flanges. on`

spaced, of a wer transmission mechanism both insertab e between said flanges and removable therefrom without displacement thereof, said mechanism including an electromagnetic field member to be rigidly secured to one of said flanged members in axial alignment therewith, an aligned relatively rotatable member carried by said field member and held against movement axially thereof, a clutch armature carried by said rotatable member for cooperation with said field member to provide a releasable power connection for said members, and means for positively and releasably securing said rotatable member to the other of said hub members.

5. The combination with substantially axially aligned driving and driven mem` bers, of a transmission unit adapted to provide a releasable and flexible power connes tion therebetween, said unit including a clutch. field member to be rigidly secured to one of said driving and driven members and having an axially aligned portion rojecting toward the other of said members and a coupling element rotatably mounted on said rojectin portion of said field member or ilexib e connection with said latter of said driving and driven members and a clutch armature positively but resili ently secured to said coupling element for support thereby in (io-operative relation to said field member.

6. A power transmission mechanism comprising end elements to be secured to driving and driven members and intermediate elements to be supported by and between said end elements and removable therefrom in assembled relation without displacement of said latter elements, said intermediate elements including a clutch Field member to be rigidly secured to one end element and a cooperating armature carried thereby substantially Vin alignment therewith and having a flexible connection with the other end element. e

7. A power transmission mechanism comprising end elements to be secured to drivmg and driven members respectively and intermediate elements to be supported by and between said end elements and remov,

able therefrom in assembled relation without displacement of said latter elements, said intermediate elements including a clutch field member to be rigidly secured to one end element and having an axially alivned portion projecting toward the other enf element, a relatively rotatable member mounted upon said projecting portion of said field member and having a flexible connection with said latter end element and a clutch armature carried by said relatively rotatable member for co-operation with said field member.

S. A power transmission mechanism com- 'tainin prising end elements to be secured to driving and driven members resi'iccfively and intermediate elements to be supported by and between said end elements and renier4 able therefrom in assembled relation witbout displacement of said latter clemente. Said intermediate elements includingr :i clutch field member to be rigidly secured. to one end element and having an axially aligned portion projecting toward tbc other end element, a relatively rotatable member mounted upon said projecting portion ol' said field member, a clutch armature rurried by said relatively rotatable member for co-operation with said field member, and u flexible connection between said relatively rotatable member and said latter end element includingr flexible units to be inserted within registering openings of said member and said element and joint releasable remeans for said units.

9. he combination with flanged and substantially axially aligned driving and driven members, of a power transmission mechanism including an electro-mugnetic clutch providing a releesalble und flexible driving connection between said members, said mechanism comprising elements coordinated for support of said mechanism solely by the flanges of said members and a brake including a brake wheel carried b v one of said members.

i 10. The combination with substantially axially aligned driving` and driven members having substantially flush flanges oping one another, of a brake including a bliike wheel secured to one of said flanges, a power transmission mechanism for said members including an electromagnetic clutch and a flexible connection co-ordinated for support thereof solely by and between the flanges of said members and for removability without displacement of said members.

11. The combination with axially spaced flanged driving and driven members, of transmission mechanism including un electro-magnetic clutch, supported solely by said members to provide a releasable and flexible power connection therebetween and a brake wheel carried by one of said members, said transmission mechanism and said brake Wheel each having less axial dimension than the space between said members whereby said transmission mechanism and said brake wheel may be` removed and rcplaced as individual units without relative displacement of said members.

12. The combination with spaced and substantially axially aligned driving and driven members, of an electro-magnetic clutch supported solely by and between said members, and a brake including an integral brake wheel supported by Said driven member, said clutch and brake wheel each havllo humble pmvm' fmmvctlun lmwevn Said lr-lying nml lx-ivm nwmherfa.

In wtnvss wlw-mf, I have hervunto sub' SCI-hm? my mmv.

BERNHARD E. FERNOW, JR. 

